Astronomy Picture of the Day ·

Violent Sunspot Group AR 1302 Unleashes a Flare

The Astronomy Picture of the Day for September 28, 2011 is “Violent Sunspot Group AR 1302 Unleashes a Flare,” an image. It is credited to Image Credit: jp-Brahic. The original explanation runs about 141 words.

Violent Sunspot Group AR 1302 Unleashes a Flare
Credit: Image Credit: jp-Brahic Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“One of the most active sunspot groups in years is currently crossing the Sun. AR 1302 first came around the Sun’s edge last week and is so large it can be seen without a telescope.”

— APOD editors, September 28, 2011

Read the full explanation on science.nasa.gov

At a glance

Date
September 28, 2011
Type
Image
Credit
Credit: Image Credit: jp-Brahic
Copyright
No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length
About 141 words

All of September 2011 → · 2011 by month → · Full archive since 1995 →

Topics in this entry

The Sun

Topics are matched from words in the title and explanation.

On this day: September 28 in other years

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Source

Copy taken Oct 28, 2026, 2:39 AM EDT. The image and explanation belong to their creators. OpenOrbit is not affiliated with or endorsed by NASA.